Resetting a user's password is easy.
NOTE: You can either tell the user to log into the web app and click on the "Forgot Password" link, or the administrator on the account can follow these steps:
FROM THE WEB APP
Step 1: Go to Settings > Users
Step 2: Check the 'Reset Password' box
Step 3: Save
Step 4: Tell the user to check their email for their temporary password.
FROM THE MOBILE APP
This setting can only be changed by logging into the Web App at this time.